Key Takeaways
- Electric suits you if you can charge at home and drive mostly local miles: lowest running cost and company car tax.
- A self-charging hybrid needs no plug and is best if you cannot charge at home and do a lot of town driving.
- A plug-in hybrid gives roughly 30 to 60 electric miles then petrol, best for mixed driving.
- Company car tax is far lower on a pure EV (4% in 2026/27) than on a hybrid or petrol model.
Electric suits you if you can charge at home and drive mostly local miles: lowest running cost and company car tax. A self-charging hybrid needs no plug and is best if you cannot charge at home and do a lot of town driving. A plug-in hybrid gives roughly 30 to 60 electric miles then petrol, best for mixed driving. Company car tax is far lower on a pure EV (4% in 2026/27) than on a hybrid or petrol model.
Choosing between a fully electric car, a standard hybrid, and a plug-in hybrid lease comes down to three things: how you use the car, what you pay in tax, and how long you plan to keep it. With benefit in kind (BIK) rates shifting year on year and a significant rule change arriving in 2028, the decision carries real financial consequences. This article sets out what each option actually costs, who each one suits, and why timing matters if you are considering a plug-in hybrid lease.
What each option means in practice
A fully electric vehicle (EV) runs entirely on battery power and produces zero tailpipe emissions. You charge it at home, at work, or at a public charging point. There is no petrol or diesel engine as a backup.
A standard hybrid, sometimes called a self-charging hybrid, combines a petrol engine with a small battery that recharges through braking and engine power. You cannot plug it in. The electric component supports the petrol engine at low speeds but does not replace it. For leasing purposes, standard hybrids are taxed much like conventional petrol cars because their CO₂ emissions fall above 50g/km. A plug-in hybrid (PHEV) has both a combustion engine and a larger battery that you charge from an external power source. Depending on the model, you can drive a meaningful distance on electric power alone before the petrol engine takes over. That electric-only range is the single most important number when it comes to calculating your tax bill.
How BIK rates compare in 2026/27
Benefit in kind tax applies when an employer provides a car as part of a remuneration package. The rate is applied to the car’s P11D value (its list price including options), and the resulting figure is added to your taxable income. Lower BIK rates mean a lower tax bill.
For the 2026/27 tax year, fully electric vehicles sit at a 4% BIK rate. That is the same rate as a PHEV with more than 130 miles of electric-only range. Below that, PHEV rates rise quickly depending on how far the car can travel on battery power alone.
| Electric range (miles) | PHEV BIK rate 2026/27 | PHEV BIK rate 2027/28 |
| More than 130 | 4% | 5% |
| 70 to 129 | 7% | 8% |
| 40 to 69 | 10% | 11% |
| 30 to 39 | 14% | 15% |
| Fewer than 30 | 16 to 17% | 17 to 18% |
To put that in context: the Toyota RAV4 PHEV, with around 46 miles of electric range, sits at 9% BIK in 2026/27. A Range Rover Sport PHEV with 75 miles of electric range sits at around 6%. An EV at the same P11D value sits at 4%.
For a 40% taxpayer, the difference between a 4% and a 10% BIK rate on a £50,000 car is £1,200 a year in additional income tax. That is not a rounding error.
Standard hybrids, because they emit above 50g/km of CO₂, do not qualify for the reduced PHEV BIK bands. They are taxed at rates comparable to petrol and diesel cars, which makes them the least tax-efficient option for company car drivers by a significant margin.
The 2028 rule change that changes the calculation
Every PHEV rate in the table above rises by 1% per year through to 2027/28. That is already built into the planning for most fleet managers and salary sacrifice scheme administrators.
The bigger change arrives in 2028/29, when all PHEVs in the 1 to 50g/km CO₂ band move to a flat 18% BIK rate, regardless of electric range. In 2029/30, that rises to 19%. The tiered system based on electric range disappears entirely.
This matters for anyone considering a plug-in hybrid lease today. A three-year lease starting in 2025 or 2026 will run into that 2028/29 flat rate. A 40-month lease started now could see BIK costs roughly double in the final year of the contract compared to the first.
The practical recommendation is straightforward: if you want a PHEV for tax efficiency, lease it on a term that ends before April 2028, or go fully electric and avoid the 2028 cliff altogether. EVs are not immune to rising rates. The 4% rate in 2026/27 rises to 5% in 2027/28, then 7% in 2028/29, and 9% in 2029/30. That is a meaningful increase over four years, but it is still well below the flat 18% that PHEVs will face from 2028/29 onwards.
VED, salary sacrifice, and the other costs to factor in
Vehicle Excise Duty (VED) changed in April 2025. PHEVs in the 1 to 50g/km band moved from £0 first-year VED to £110, putting them on the same footing as petrol and diesel cars. EVs retain a £10 first-year VED rate until 2029/30. It is a modest difference in isolation, but it adds to the cumulative cost picture for PHEVs.
On salary sacrifice, employees pay for the car from gross salary before income tax and National Insurance are deducted. BIK tax still applies, but for EVs the combination of a 4% BIK rate and pre-tax salary deductions produces a meaningful monthly saving compared to a personal lease. PHEVs are eligible for salary sacrifice too, though employer National Insurance contributions may apply depending on the vehicle’s emissions. The lower the BIK rate, the more the salary sacrifice arrangement works in the employee’s favour.
For private lessees not using salary sacrifice, standard 20% VAT applies to all lease payments. There is no VAT relief for private individuals unless they are VAT-registered.
From April 2028, a mileage-based charge is expected to apply to both PHEVs and EVs. Based on current projections, PHEVs face approximately 1.5p per mile and EVs approximately 3p per mile. At 10,000 miles a year, both work out to around £300 annually. That parity is worth noting: EVs attract a higher per-mile charge, which partially offsets their lower BIK rates over high-mileage contracts.
Which option suits which driver
A fully electric lease suits drivers who cover predictable mileages, have access to home or workplace charging, and want the lowest possible BIK rate with the most stable long-term tax outlook. The 4% rate in 2026/27 is the floor, and while it rises, it rises more slowly and from a lower base than any PHEV band.
A plug-in hybrid lease suits drivers who cover longer or less predictable distances, are not yet ready to commit to full electrification, and can take advantage of the current tiered BIK rates before the 2028 flat-rate change. The higher the electric range of the PHEV, the lower the BIK rate and the more competitive the tax position. PHEVs with fewer than 30 miles of electric range offer very limited tax advantage over a conventional petrol car at this point.
A standard hybrid lease suits drivers who want lower fuel costs than a pure petrol car but do not need or want tax-efficient company car treatment. For private lessees with no salary sacrifice arrangement and no benefit in kind exposure, the tax argument is irrelevant and a standard hybrid may simply be the right car for the right price.
What to do next
If you are weighing up a plug-in hybrid lease against a fully electric alternative, the numbers above give you a starting point. The next step is to apply your own P11D value, tax rate, and contract length to see what each option costs across the full term.
Car Leasing Made Simple is FCA-authorised and a member of the BVRLA (British Vehicle Rental and Leasing Association). Browse current PHEV and EV lease deals on the site, or get in touch with the team to run through the numbers for your specific situation before the next BIK rate change takes effect.
The benefit in kind figures in this article are illustrative, based on HMRC rates for the 2026/27 tax year and correct as at July 2026. Rates are set by government and change in future Budgets, and your own position depends on the car’s P11D value, your marginal tax rate and your circumstances. This is general information, not tax advice; confirm your position with HMRC or a qualified accountant.
Frequently asked questions
A plug-in hybrid (PHEV) lease is a car leasing agreement for a vehicle that combines a combustion engine with a battery you can charge from an external power source. A standard hybrid recharges its smaller battery through driving and braking, and cannot be plugged in. For tax purposes, PHEVs qualify for reduced benefit in kind (BIK) rates based on their electric-only range, while standard hybrids are taxed at rates closer to petrol cars.
The BIK rate for a PHEV in 2026/27 depends on its electric-only range. Vehicles with more than 130 miles of range attract 4%, those with 70 to 129 miles attract 7%, those with 40 to 69 miles attract 10%, and those with fewer than 30 miles attract 16 to 17%. All rates rise by 1% in 2027/28.
From 2028/29, all PHEVs in the 1 to 50g/km CO₂ band will face a flat 18% BIK rate regardless of electric range, rising to 19% in 2029/30. If you are leasing a PHEV for tax efficiency, a contract that ends before April 2028 allows you to benefit from the current tiered rates throughout the full term.
In 2026/27, fully electric vehicles attract a 4% benefit in kind rate, which a plug-in hybrid with more than 130 miles of electric range can match, but most plug-in hybrids sit between 7% and 17% depending on range. From 2028/29, electric vehicles will be at 7% while all plug-in hybrids in the low-emission band move to a flat 18%, making electric cars the more tax-efficient choice over a longer contract.
Yes, plug-in hybrids are eligible for salary sacrifice arrangements, meaning employees pay for the car from gross salary before income tax and National Insurance are deducted, though employer National Insurance contributions may apply depending on the vehicle’s emissions. The lower the benefit in kind rate, the more the salary sacrifice arrangement works in the employee’s favour, which is why electric cars currently offer the strongest saving through this route.
From April 2025, plug-in hybrids in the 1 to 50g/km CO₂ band moved from £0 first-year Vehicle Excise Duty to £110, putting them on the same footing as petrol and diesel cars, while fully electric vehicles retain a £10 first-year rate until 2029/30.
